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A seismometer.

An instrument for signaling by reflecting the rays of the sun in different directions. Knight.

A short cope, or an inferier kind of cope. [Obs.] Chaucer.

p. p. of Shape. Chaucer.

An instrument for detecting small quantities of iron in any substance by means of a very delicate combination of magnetic needles.

Sinople.

A device for determining the refractive state of the eye by observing the movements of the retinal lights and shadows. -- Ski*as"co*py (#), Ski*as"co*py (#), n.

nd whose surface forms an angle with the plane of the horizon. buildings the summit and slope of a hill. Macaulay. Under the slopes of Pisgah. Deut. iv. 49. (Rev. Ver.).

State of being slope. Sir H. Wotton.

Obliquely. [Obs.] Carew.

See Soap. [Obs.]

An optical instrument for forming and examining spectra (as that of solar light, or those produced by flames in which different substances are volatilized), so as to determine, from the position of the spectral lines, the composition of the substance.

Same as Sphygmograph.

A small instrument containing a minute particle of a radium compound mounted in front of a fluorescent screen and viewed with magnifying lenses. The tiny flashes produced by the continual bombardment of the screen by the a rays are thus rendered visible. -- Spin*thar`i*scop"ic (#), a.

A wet meter used to determine the breathing capacity of the lungs.

-wheeled, or sometimes four-wheeled, carriage, without a top; -- so called from Lord Stanhope, for whom it was contrived.

An optical instrument used in determining the position of the planes of light-vibration in sections of crystals.

An instrument with two lenses, by which an image of a single picture projected upon a screen of ground glass is made to present an appearance of relief, and may be viewed by several persons at once.

An optical instrument for giving to pictures the appearance of solid forms, as seen in nature. It combines in one, through a bending of the rays of light, two pictures, taken for the purpose from points of view a little way apart. It is furnished with two eyeglasses, and by refraction or reflection the pictures are sup…

To auscultate, or examine, with a stethoscope. M. W. Savage.